Here is a full working example that semi-resembles the original example on Wikipedia:

```
var('u v')
sph_obj = parametric_plot3d(
(sin(u)*cos(v), sin(u)*sin(v), cos(u)),
(v, 0, 2*pi),
(u, 0, 2*pi),
opacity=0.3,
color=(0.2, 0.1, 0.1),
)
cyl_obj = parametric_plot3d(
(sin(v)/2, cos(v)/2 + 1/2, u),
(v, 0, 2*pi),
(u, -3/2, 3/2),
opacity=0.7,
color=(0.2, 0.2, 0.3),
plot_points=(80, 3)
)
v_curve_obj = parametric_plot3d(
(sin(v)*cos(v), sin(v)*sin(v), cos(v)),
(v, 0, 2*pi),
color="green",
thickness=2,
)
(sph_obj + cyl_obj + v_curve_obj).rotateZ(3/2).show(
viewer="tachyon",
aspect_ratio=1,
frame=False,
zoom=1.3
)
```